Kicker 08KS690 KS-Series 6-Inch x 9-Inch 152mm X 229mm Coaxial Speaker Pair of 6x9-inch coaxial speakers Curvilinear, gray woofer cones with Santoprene surround and newly designed basket 90 Watts RMS (270 Watts peak) power handling with 4-ohm impedance 30 Hz-21kHz frequency response One-year limited warranty